The Arizona Trail Association’s Endurance Events take place on premier segments of the Arizona National Scenic Trail. Please explore the site and find out more about our trail running and mountain biking events, which directly benefit the maintenance and protection of the AZT.

Arizona Trail Endurance Events

Colossal Vail 50/50

Trail Run

presented by Fleet Feet Tucson

December 11, 2021

The Colossal Vail 50/50 is an adventurous ultra run on portions of the Arizona Trail near the community of Vail (24 miles southeast of Tucson). Starting and finishing at Colossal Cave Mountain Park, both the 55K and 50-mile courses feature some of the greatest high desert trail running opportunities in this part of the state. There’s also a spicy half-marathon distance.

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Oracle Rumble

Oracle Rumble

Trail Run

presented by Summit Hut

January 29, 2022

The Oracle Rumble takes place near the beautiful, historic town of Oracle, Arizona, located just north of Tucson on the north side of the mighty Santa Catalina Mountains. The event is mostly singletrack through Oracle State Park (OSP) and follows magnificent and remote sections of the Arizona Trail (AZT) in Pinal County. The course is constantly rolling, making this a very challenging event for all distances. Your reward is that the views are often breathtaking!

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Vail Scramble

Trail Run

presented by Summit Hut

April 10, 2022

This trail half-marathon and 10K traverses the valley between the Santa Rita and the Rincon Mountains. It offers spectacular, sweeping views and is mostly a gentle, winding descent through ocotillo, prickly pear cactus, creosote, and mesquite. Whether you are looking to set a trail half-marathon PR or are attempting your first off-road run, this event is an ideal way to experience the Arizona Trail.

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North Rim RambleNorth Rim Ramble

Trail Run

presented by Summit Hut

Mountain Bike Race

presented by Cosmic Cycles

August 20 & 21, 2022

This one-of-a-kind trail running and mountain bike event includes some of the Arizona Trail’s most pleasant trail tread and well-graded Forest Service roads on the North Kaibab Ranger District. The 13.1-mile loop traverses an enchanting area of northern Arizona, passing through an idyllic forest of spruce, pine, and aspen; past shallow ponds, springs; and in and out of limestone canyons. For about a mile, the course dodges among stately trees along the East Rim of the Grand Canyon, offering breathtaking views of Marble Canyon, the Vermilion Cliffs, Saddle Mountain Wilderness, House Rock Valley, and Navajo Mountain.

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Flagstaff to Grand Canyon Stagecoach Line 100Flagstaff to Grand Canyon Stagecoach Line Ultra

Trail Run & Mountain Bike Race

presented by Babbitt Ranches

September 17-18, 2022

The Stagecoach 100 Mile & 55k follows Arizona Trail singletrack along the foothills of the mighty San Francisco Peaks. This is followed by a long and rolling descent into the Arizona high plains, which includes a trip through the historic Babbitt Ranch, a longstanding family parcel of around 750,000 acres. 55K runners finish here and 100-mile participants continue to the South Rim of the Grand Canyon. We’ve also got a mountain bike option! Ride for 100 scenic miles along the Arizona Trail between Flagstaff and Grand Canyon.

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